/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.iotdb.db.protocol.influxdb.meta;

import org.apache.iotdb.db.utils.DataTypeUtils;
import org.apache.iotdb.rpc.IoTDBConnectionException;
import org.apache.iotdb.service.rpc.thrift.TSInsertRecordReq;
import org.apache.iotdb.tsfile.file.metadata.enums.TSDataType;

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.atomic.AtomicLong;

public class TagInfoRecords {

    private static final String TAG_INFO_DEVICE_ID = "root.TAG_INFO";
    private static final List<String> TAG_INFO_MEASUREMENTS = new ArrayList<>();
    private static final List<TSDataType> TAG_INFO_TYPES = new ArrayList<>();
    private static final AtomicLong TAG_TIME_STAMPS = new AtomicLong();

    static {
        TAG_INFO_MEASUREMENTS.add("database_name");
        TAG_INFO_MEASUREMENTS.add("measurement_name");
        TAG_INFO_MEASUREMENTS.add("tag_name");
        TAG_INFO_MEASUREMENTS.add("tag_order");

        TAG_INFO_TYPES.add(TSDataType.TEXT);
        TAG_INFO_TYPES.add(TSDataType.TEXT);
        TAG_INFO_TYPES.add(TSDataType.TEXT);
        TAG_INFO_TYPES.add(TSDataType.INT32);
    }

    private final List<String> deviceIds;
    private final List<Long> times;
    private final List<List<String>> measurementsList;
    private final List<List<TSDataType>> typesList;
    private final List<List<Object>> valuesList;

    public TagInfoRecords() {
        deviceIds = new ArrayList<>();
        times = new ArrayList<>();
        measurementsList = new ArrayList<>();
        typesList = new ArrayList<>();
        valuesList = new ArrayList<>();
    }

    public void add(String database, String measurement, String tag, int order) {
        deviceIds.add(TAG_INFO_DEVICE_ID);
        // Multiple adjacent records, possibly with the same timestamp
        times.add(TAG_TIME_STAMPS.getAndIncrement());
        measurementsList.add(TAG_INFO_MEASUREMENTS);
        typesList.add(TAG_INFO_TYPES);

        List<Object> values = new ArrayList<>();
        values.add(database);
        values.add(measurement);
        values.add(tag);
        values.add(order);
        valuesList.add(values);
    }

    public List<TSInsertRecordReq> convertToInsertRecordsReq(long sessionID)
            throws IoTDBConnectionException {
        ArrayList<TSInsertRecordReq> reqs = new ArrayList<>();
        long now = 0;
        for (int i = 0; i < deviceIds.size(); i++) {
            TSInsertRecordReq tsInsertRecordReq = new TSInsertRecordReq();
            tsInsertRecordReq.setSessionId(sessionID);
            tsInsertRecordReq.setTimestamp(times.get(i));
            tsInsertRecordReq.setIsAligned(false);
            tsInsertRecordReq.setPrefixPath(deviceIds.get(i));
            tsInsertRecordReq.setMeasurements(measurementsList.get(i));
            tsInsertRecordReq.setValues(
                    DataTypeUtils.getValueBuffer(typesList.get(i), valuesList.get(i)));
            reqs.add(tsInsertRecordReq);
        }
        return reqs;
    }
}
